官方介绍:FillDisk is a simple utility that fills up a disk with data. It starts with1GB files, then drops to 512MB, 256MB and so on until it fills up completely the disk with files.(FillDisk工具的工作原理就是先生成1GB的文件,当磁盘空间不足1GB时,就生成512MB的,再不足就生成256MB的,以此类推,逐渐生成小文件,直至磁盘空间被全部填满。)